Order the following numbers from least to greatest: 3.9 x 10^15, 7.3 x 10^9, 4.6 x 10^9, 2.1 x 10^18

1.  7.3 x 10^9

2.  3.9 x 20^15

3.  2.1 x 10^18

Step-by-step explanation

Multiplying by exponents of 10 you simply move the decimals that many places.  

b

step-by-step explanation:

v = 1/3 a^2h

step-by-step explanation:

if the height is 57.7cm and the height of the slant edge is 18.2cm, then the volume is 1/3 a^2h.